νεανικέω
From LSJ
συνετῶν μὲν ἀνδρῶν, πρὶν γενέσθαι τὰ δυσχερῆ, προνοῆσαι ὅπως μὴ γένηται· ἀνδρείων δέ, γενόμενα εὖ θέσθαι → it is the part of prudent men, before difficulties arise, to provide against their arising; and of courageous men to deal with them when they have arisen
English (LSJ)
A to be youthful, Eup. 109.
Greek (Liddell-Scott)
νεᾱνῐκέω: εἶμαι νεανικός, Εὔπολις ἐν «Δήμοις» 26.
